Makes watertight (5)
'makes watertight' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for seals that I've seen before include "Marine mammals" , "Makes waterproof" , "Great swimmers" , "Animals spotted on coast" , "they're impressive" .)
'makes watertight' is the definition.
(I've seen this in another clue)
This is all the clue.
(Another definition for caulks that I've seen is " Makes watertight".)